Gamoneda Formation

Gamoneda Formation
Stratigraphic range: Emsian
~
TypeGeological formation
Thickness~340 m (1,120 ft)
Lithology
PrimarySandstone, siltstone
OtherShale
Location
Coordinates21°30′S 64°48′W / 21.5°S 64.8°W / -21.5; -64.8
Approximate paleocoordinates66°30′S 98°24′W / 66.5°S 98.4°W / -66.5; -98.4
RegionTarija Department
CountryBolivia
ExtentCordillera Oriental
Type section
Named forLa Gamoneda
Gamoneda Formation (Bolivia)

The Gamoneda Formation is an Emsian geologic formation of southern Bolivia. The approximately 340 metres (1,120 ft) thick formation comprises marine micaceous grey siltstones and burrowed grey sandstones and shales.[1][2][3][4][5]

Fossil content

The formation has provided the following fossils:

See also

References

  1. ^ USNM loc. 20018 at Fossilworks.org
  2. ^ USNM loc. 20022 at Fossilworks.org
  3. ^ USNM loc. 20023 at Fossilworks.org
  4. ^ USNM loc. 20024 at Fossilworks.org
  5. ^ Scaphiocoelia Zone trilobites, Gamoneda Fm at Fossilworks.org

Further reading

  • N. Eldredge and L. Branisa. 1980. Calmoniid trilobites of the Lower Devonian Scaphiocoelia Zone of Bolivia, with remarks on related species. Bulletin of the American Museum of Natural History 165(2):181-289
  • P. E. Isaacson. 1977. Devonian stratigraphy and brachiopod paleontology of Bolivia. part A: Orthida and Strophomenida. Palaeontographica Abteilung A 155(5-6):133-192
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